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A Bonnin

Publications and source records attributed to A Bonnin.

143 records · Page 8Linked to original sources
PubMedDate not supplied

Peliosis hepatis: triphasic helical CT and dynamic MRI findings.

We report the triphasic helical computed tomographic (CT) and dynamic magnetic resonance imaging (MRI) findings in a unique case of biopsy-proven peliosis of the liver. Several reports have described the CT and MRI findings of this entity without specific appearance. This report discusses the usefulness of dynamic helical CT and MRI for the early diagnosis of peliosis.

Female↗
PubMedDate not supplied

Hyperacute rejection in liver transplantation: CT findings.

Hyperacute rejection is rare after liver transplantation. We report a case of early graft failure following liver transplantation in a 46-year-old woman. On the 5th postoperative day, progressive loss of graft function occurred. Liver histology showed submassive hepatic necrosis. Computed tomography features showing large geographic areas of necrosis without anatomic distribution were suggestive of hyperacute rejection.

Female↗
PubMedDate not supplied

Monoclonal antibodies identify a subset of dense granules in Cryptosporidium parvum zoites and gamonts.

Two monoclonal antibodies raised against purified oocysts and excysted sporozoites of Cryptosporidium parvum identified antigens located in the anterior half of sporozoites by indirect immunofluorescence microscopic assay. The monoclonal antibodies also reacted with Triton-X-100-insoluble antigens of asexual and sexual stage parasites developing in epithelial cells in vitro and identified a 110 kilodalton antigen on immunoblots of sodium dodecyl sulfate-extracted oocysts. Immunoblotting reactivity was abolished by prior treatment of blotted antigen with periodic acid suggesting that the monoclonal antibodies recognize a carbohydrate or carbohydrate-dependent epitope(s). By immunoelectron microscopy, the antibodies reacted with a family of small, electron-dense granules located predominantly in the central region of merozoites and also with a population of cytoplasmic inclusions in macrogamonts. In addition, the monoclonal antibodies prominently labeled the parasitophorous vacuole membrane of all intracellular stages examined suggesting that the corresponding antigen(s) may be exocytosed from the granules to become associated with Triton X-100-insoluble components of the vacuolar membrane or cytoskeleton.

Animals↗
PubMedDate not supplied

[A case of free-living Amoebae keratitis in a non contact lens wearer].

Free living amoebae keratitis is a rare but severe infection due to ubiquitous protozoa of the genus Acanthamoeba. Most cases occur in contact lens wearers. In the present paper, we report a case of Acanthamoeba keratitis secondary to a vegetal injury of the cornea in a patient who did not wear contact lens. This case emphasizes the fact that the visual outcome is dependent on early treatment and outlines the need for a rapid diagnosis of amoebic keratitis. The diagnosis is based essentially on culture of trophozoïtes and cysts of the parasite from a corneal scrape or a biopsy specimen. The treatment is long, difficult and often a failure. Successful management of amoebic keratitis infection thus requires constant dialogue between the physician and the clinical microbiologist, a quality sample and efficient laboratory tests.

Acanthamoeba↗
PubMedDate not supplied

[Arteriography in polyarteritis nodosa. 15 cases (author's transl)].

Despite its imperfections, arteriography, when it demonstrates aneurysms, is an important element in diagnosis in all those cases in which histological findings are not definitive. It should be carried out before renal biopsy, given the risk of traumatic rupture of a possible aneurysm. The discovery of isolated distal arterial stenoses is not characteristic, though in the presence of a suggestive clinical picture, amy be considered as an argument in favour of the diagnosis. They occur frequently in the arteries of the digestive tract even in the absence of any abdominal symptoms or signs. Arteriography also has a prognostic value in establishing the extent of arterial lesions and, finally, is useful in the diagnosis of certain complications such as visceral haematomas and digestive haemorrhages. We thus feel that polyarteritis nodosa should be the object of a complete vascular exploration, including aortography with selective renal studies but also coelio-mesenteric opacification. In the light of the clinical context, the distal limb arteries may also be explored. Thus the diagnosis of polyarteritis nodosa is not purely histological but also arteriographic.

Adolescent↗
PubMedDate not supplied

[Magnetic resonance imaging in Cushing disease. Prediction of surgical results].

OBJECTIVES: The purpose of the study is to determine if pituitary Magnetic Resonance Imaging (MRI) can predict the outcome of transsphenoidal surgery in patients with Cushing's disease. METHODS: Fifty four patients were divided in three groups according to MRI findings: those with a well circumscribed focal lesion clearly separated from the cavernous sinus (group 1, n = 24), those with adenomas in close contact with the cavernous sinus (group 2, n = 18), and those with no identified lesion (group 3, n = 12). RESULTS: The adenoma is found on the predicted side in 97,6% of the cases with positive MRI. A histologically proven adenoma is found in 96, 100 and 33% of the cases in groups 1, 2 and 3, with successful outcome in 91, 94 and 58% of the patients respectively. In group 2, surgery failed in a patient in whom tumoral tissue surrounded the internal carotid artery, but succeeded in two other cases in whom a MRI involvement of the cavernous sinus was suspected. CONCLUSION: We confirm the excellent localization value of MRI. Failure due to cavernous sinus involvement can be predicted only when MRI shows that the adenomatous tissue surrounds the carotid artery. In cases of negative MRI, the outcome is less favorable.

Adenoma↗